Hasp-lock



(Mode.)

E. KNIGHT.

Y HASP LOCK. Y No. 859,681. Patented B989?. 22, 1887.

IINTTED STATES PATENT trice.

EDGAR KNIGHT, OF SAYBROOK, CONNECTICUT.

HAsP-LocK.-

:SPECIFICATION forming part of Letters Patent No. 359,681, dated March 22, 1887.

Application filed September 4,1885. Serial No. 212,833. (Model.)

To all whom t may concern:

Beitknown that I, EDGAR KNIGHT, of Saybrook, in the county oi' Middlesex and State of Connecticut, have invented certain neur and useful Improvements in Hasp-Locks, of which the following is a full, clear, and exact description, whereby any one skilled in the art can make and use the same.

My invention relates, primarily, to a device known as a hasp-lock, that consists of a shauk-section with a pivot supported in one end of the same, and at the opposite end of said section a lock-receiving section consisting of au enlarged part that bears the lock mechanism.

The object of my improvement is to provide a lock of this general class that shall possess advantagesin use over prior locks of this class and shall be free from objections present in such old devices.

My improvement consists in a lock having tumblers and separating-Washers, whereby individual action and movement of the tumbler-s is insured; and it still further consists in the details of the several parts of the device and their combination, as more particularly hereinafter described, and pointed out in the claims.

Referring to the drawings, Figure l is a plan View oi' a hasp with a lock embodying my iniprovenients, the case and cover-plates being cut away to show the lock mechanism. Fig. 2 is an edge View of the lock mechanism, looking from the right. Fig. 3 is a view of the mechanism, looking from the left.

In the accompanying drawings, the letter a denotes a hasp that consists of a metallic casing having a shank-section, b, and a lock-receiving section, c. TWithin the latter part the lock mechanism, that is attached to a lockplate, d, is secured, as by means of screws that pass through suitable holes in the plate and take into threaded sockets in the Walls of the casing.

The lock-bolt e is of ordinary construction and rests against lugs on the lock-plate, and between which it is free to move back and forth, except as held bythe tumblersf. These tumblers are pivoted at one end on a pin, f', and have each at the other end a blunt hook, f2, with vertical faces that are adapted to engage the opposite facesof a lug, e', that projects from the upper side of the bolt e. The several tumblers are separated at their pivot end by means of annular Washers g, and at the hook end by the long dat washers g', that I will term strapvfashera77 to distinguish them from those at the opposite end of the tumblers. The several tumblers and the Washers are built upon the supporting-pins in alternation, the upper ends of the strap-Washers being provided vvith holes that enable them to tit upon the stump or pin g2, while the lower ends rest between the hooked ends of the tumblers, While near the back or upper edge of the tumblers another pin, h, is placed, that serves not only to support the strap-washers, but also the further function as a stop to prevent the picking of the lock, as will hereinai'terbe explained. A spring, j, is provided for each tumbler, and it consists of two arms, j and f, extending from the central coil that fits upon the spring-post k. The arms j and j2 of each spring lie in the chambers between the strap-washers, one end pressing against the pin g2, while the other presses its respective tumblers down toward the lock-bolt. By means of this construction the several tu mblers are prevented from sticking together and a better and individual operation ofeach tu mbler is practically insured. In forms of locks where the tumblers lie close upon each other they are apt to rust, so that the lifting of one lifts its neighbors, and thus interferes with the perfect operation of the lock parts. Such a `fault is prevented by my improved construction.

NVith the hook-shaped tumblers-such as I use in the lock Within describedthe lock-bolt could be freed, provided they were all lifted so that the hooks would clear the lug, and this might be done with a plane or flat-edged bit if it were not for the stoppin, When the stoppin is present, as above described, an attempt to lift all of the tumblers with suc-h a dat-bit ted key would result in the back of the widest tumbler striking against the stoppin, and the lifting of any more tumblers is prevented.

I claim as my improvementl. In a lock, in combination with a plural number of tumblers, the separating-washers extending between the tumblers for the limit IOO of their play, and forming chambers within boltandtumblers,theseparating-Washersform- 1o which the ends of the tumbler-springs lie, all ing the spring-chambers, the tumbler-springs, substantially as described. and the pin h, that. forms asupport for the Wash-V 2. In a lock, in combination with a plural ers and a stop for the tumblers, all substan- 5 number oftiunblers, a stop-pin located behind tially as described.

` the tumblers and across their path, and limit- EDGAR KNIGHT.

ing the movement; of the tumblers away from Vitnesses: the bolt, all substantially as described. OHAS. L. BURDETT,

3. In a lock, in combination with a sliding A. B. JENKINS. 

